BASF Glythermin P44 gıda tipi donma ve korozyon önleyici

1. ® = Registered trademark of BASF SE
Glythermin®
P44
Concentrated heat-transfer fluid for solar heating equipment and for
heating and cooling equipment used in food processing and water
purification
Technical Information
TI/EVO 1024 e
August 2011 Page 1 of 12
Supersedes edition dated May 2007

2. TI/EVO 1024 e August 2011 Page 2 of 12 Glythermin P44
Properties Appearance clear to slightly opalescent liquid
Density (20 °C) 1.054 – 1.057 g/cm3 DIN 51757
Refractive index n20
D 1.435 – 1.438 DIN 51423
pH 6.5 – 8.0 ASTM D 1287
Water content max. 4 % ASTM D 1123/
DIN 51777
Flash point 100 °C DIN 51578
Reserve alkalinity 10 – 16 ml M/10 HCl ASTM D 1121
The above information is correct at the time of going to press.
It does not necessarily form part of the product specification.
A detailed product specification is available from your local BASF
representative.
Properties
Glythermin P44 is a non-toxic, vir­tu­ally odor­less, hygro­scopic liq­uid. It is
based on pro­py­lene gly­col.
The cor­ro­sion inhib­i­tors con­tained in Glythermin P44 reli­ably pro­tect the
met­als nor­mally used in solar col­lec­tors and other heat­ing equip­ment from
cor­ro­sion, age­ing and scal­ing.
Mix­tures of Glythermin P44 and water do not demix.
Glythermin P44 does not con­tain any ­nitrites, phos­phates or ­amines.
Mis­cibil­ity Glythermin P44 is mis­cible with typical com­mer­cial heat-trans­fer ­fluids based
on pro­py­lene gly­col.
Applications
Glythermin P44 has to be diluted with at least 25 % v/v and no more than
75 % v/v of water when it is used in heating or cooling circuits. Potable
water (100 mg/kg Cl– max.) or demineralized water with a neutral pH must
be used.
In order to prevent corrosion, the following minimum and maximum
concentrations of Glythermin P44 should be observed.
In solar heating equipment 40 – 75 % v/v Glythermin P44
In other equipment 25 – 75 % v/v Glythermin P44
Stability in solar heating Sustained exposure to temperatures higher than 170 °C causes
equipment Glythermin P44 to age prematurely.
Glythermin P44 starts to age irreversible at temperatures higher than
200 °C, with the result that the reliability of the equipment may be
jeopardized.
The following table shows the effectiveness of mixtures of Glythermin P44 in
inhibiting corrosion.
Corrosion tests according to ASTM D 1384 (American Society for Testing
and Materials)
Average change in weight of coupons in g/m2

3. TI/EVO 1024 e August 2011 Page 3 of 12 Glythermin P44
Material Glythermin P44/
water (ASTM standard) 1 : 2
Copper (F-Cu) – 0.5
Soft solder (L Pb Sn 30) – 0.2
Brass (Ms 63) – 0.2
Cast iron (GG 25) + 0.2
Steel (H II) + 0.4
Cast aluminium (G AlSi6Cu4) + 0.4
Mixtures of Glythermin P44 and water do not attack the sealants normally
used in heating systems. The following list of sealants, elastomers and plas-
tics that are resistant to mixtures of Glythermin P44 and water has been
compiled from experience, and the literature.
Examples of sealants are Fermit® and Fermitol® (registered trademarks of
Nissen Volk GmbH, Hamburg) and hemp
Butyl rubber IIR
Chloroprene CR
Ethylene-propylene-diene rubber EPDM
Fluorocarbon elastomers FPM
Natural rubber at temperatures up to 80 °C NR
Nitrile rubber NBR
Polyacetal POM
Polyamide at temperatures up to 115 °C PA
Polybutene PB
Polyethylene, soft/hard PE-LD/PE-HD
Polyethylene, crosslinked VPE
Polypropylene PP
Polytetrafluoroethylene PTFE
Polyvinyl chloride, rigid PVC h
Silicone rubber Si
Styrene-butadiene rubber at temperatures SBR
of up to 100 °C
Unsaturated polyester resins UP
Phenolic and aminoplast resins, plasticized PVC and polyurethane
­elastomers are not resistant to Glythermin P44.
An impor­tant point to note is that the per­for­mance of elas­to­mers such as
EPDM is deter­mined by the ­nature and ­amount of the con­stit­u­ent addi­tives
and the vul­can­iza­tion con­di­tions, as well as the prop­er­ties of the rub­ber
­itself.
For this rea­son, we would rec­om­mend test­ing the resis­tance of these elas­to­
mers to mix­tures of Glythermin P44 and water ­before they are put into
ser­vice for the first time.
This ­applies par­tic­u­larly to elas­to­mers ­intended for use as mem­branes for
expan­sion tanks as ­described in DIN 4807.
Gaskets made from 70 EPDM 281* have been shown to be resistant to
mixtures of Glythermin P44 and water at temperatures of up to 160 °C, and
gaskets such as REINZ-AFM 34** and Centellen 3820***, which is based on
a combination of Aramid and special NBR, have been shown to be resistant
at temperatures of up to 200 °C.
*** Supplied by Carl Freudenberg, Dichtungs- und Schwingungstechnik,
Postfach 1 00 03 63, D-69465 Weinheim
*** Supplied by REINZ-Dichtungs GmbH, Postfach 19 09,
D-89229 Neu-Ulm
*** Supplied by Hecker Werke GmbH Co., D-71093 Weil im Schönbuch

4. TI/EVO 1024 e August 2011 Page 4 of 12 Glythermin P44
If ­losses occur due to evap­o­ra­tion, the ­system can be ­topped up with neu­
tral pot­able water. If leak­ages or other ­losses occur, the heat-trans­fer liq­uid
in the ­system must be replen­ished with an aque­ous Glythermin P44 solu­tion
of the same con­cen­tra­tion. In cases of doubt, the Glythermin P44 con­tent
must be deter­mined.
Glythermin P44 Density at 20 °C Refractive index Freezing point
% v/v g/cm3 n20
D °C
25 1.023 1.3627 – 10
30 1.029 1.3690 – 13
35 1.033 1.3747 – 17
40 1.037 1.3801 – 21
45 1.042 1.3855 – 26
50 1.045 1.3910 – 32
55 1.048 1.3966 – 40
Shelf life Glythermin P44 has a shelf life of at least three years when stored properly
and professionally in originally closed containers.
Packaging/form of delivery Glythermin P44 is supplied in road tankers and 220 kg non-returnable
metal drums.
Safety
Safety Data Sheet A safety data sheet has been drawn up for Glythermin P44 in accordance
with EEC Directive (EG) No. 1907/2006

5. TI/EVO 1024 e August 2011 Page 5 of 12 Glythermin P44
Temperature °C(107587/01/e)
–40 –30 –20 –10 ±0 10 20 30 40 50 60 70 80 90 100 110 120
Density
1.100
1.090
1.080
1.070
1.060
1.050
1.040
1.030
1.020
1.010
1.000
0.990
0.980
0.970
0.960
60
50
40
30
20
Water = 0
Density
of mixtures of Glythermin P44 and water as a function
of temperature and concentration
% (v/v) Glythermin P4470
g/cm3

6. TI/EVO 1024 e August 2011 Page 6 of 12 Glythermin P44
Temperature °C(107587/02/e)
–40 –30 –20 –10 ±0 10 20 30 40 50 60 70 80 90 100
Kinematicviscosity
1000
800
600
200
400
100
80
60
20
40
10
8
6
2
4
1
0.8
0.6
0.2
0
0.4
Viscosity
of mixtures of Glythermin P44 and water as a function
of temperature and concentration
60
50
40
30
20
Water = 0
70
% (v/v) Glythermin P4480
mm2
/s

7. TI/EVO 1024 e August 2011 Page 7 of 12 Glythermin P44
Temperature(107587/03/e)
–20 ±0 +20 40 60 80 100
Specificheatcapacity
2.0
2.5
3.0
3.5
4.0
J/g·K
30
40
50
60
70
80
90
100
% (v/v) Glythermin P44
°C
20
Specific heat capacity
of mixtures of Glythermin P44 and water as a function
of temperature and concentration

8. TI/EVO 1024 e August 2011 Page 8 of 12 Glythermin P44
(107587/04/e)
–20 ±0 +20 40 60 80 °C 120100
Heatconductivity
0.2
Temperature
0.3
0.4
0.5
0.7
0.6
% (v/v) Glythermin P44
Heat conductivity
of mixtures of Glythermin P44 and water as a function
of temperature and concentration
20
30
40
50
70
60
80
W/m·K

9. TI/EVO 1024 e August 2011 Page 9 of 12 Glythermin P44
(107587/06/e)
20 30 50 100 120 140 160 °C
0.002
Temperature
0.01
0.05
0.2
1
5
Vapour pressure
of mixtures of Glythermin P44 and water as a function
of concentration
bar
Vapourpressure
% (v/v) Glythermin P44
80
100
70
40
90
70 180
0
0.005
0.02
0.1
0.5
2
10
40 60 80

10. TI/EVO 1024 e August 2011 Page 10 of 12 Glythermin P44
(107587/07/e) % (v/v) Glythermin P44
Temperature
°C
0 10 20 30 40 50 60 9070 80
40
80
100
140
160
60
120
180
200
0.7
bar
1.0
0.4
0.2
0.1
Boiling point isobars
of mixtures of Glythermin P44 and water as a function
of concentration
2.0
3.5

11. TI/EVO 1024 e August 2011 Page 11 of 12 Glythermin P44
140
160
180
200
220
240
260
0 10 20 30 40 50 60 70 80 90 100
% (v/v) Glythermin P44(107587/08/e)
10 bar
9 bar
8 bar
7 bar
6 bar
5 bar
Boiling point isobars
of mixtures of Glythermin P44 and water as a function
of concentration
Temperature
150
170
190
210
230
250
4 bar
°C

12. TI/EVO 1024 e August 2011 Page 12 of 12 Glythermin P44
BASF SE
Fuel and Lubricant solutions
67056 Ludwigshafen, Germany
www.basf.com/automotive-oil
Note
The data contained in this publication are based on our current knowledge
and experience. In view of the many factors that may affect processing
and application of our product, these data do not relieve processors from
carrying out their own investigations and tests; neither do these data imply
any guarantee of certain properties, nor the suitability of the product for
a specific purpose. Any descriptions, drawings, photographs, data, pro-
portions, weights etc. given herein may change without prior information
and do not constitute the agreed contractual quality of the product. It is
the responsibility of the recipient of our products to ensure that any
proprietary rights and existing laws and legislation are observed.
August 2011